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aria-expanded attribute (aria)

Screen Reader support level: partial (80/88)

On this page

About this feature

Indicates whether the element, or another grouping element it controls, is currently expanded or collapsed.

Age of results

Results across all tests for this feature range from 10 months ago to 4 years ago. Detailed dates and version information can be found in associated tests.

Caution

Failing or partial results may be out of date. The oldest result is from 3 years ago. Consider running the associated tests and contributing results.

Expectations

What are expectations?

Screen Reader support by expectation

ExpectationJAWSNarratorNVDAOrcaTalkBackVoiceOver (iOS)VoiceOver (macOS)
ChromeEdgeFirefoxEdgeChromeEdgeFirefoxFirefoxChromeSafariSafari
MUST convey the "false" valuesupportedsupportedsupportedsupportedsupportedsupportedsupportedpartial (2/3)supportedsupportedpartial (2/3)
MUST convey the "true" valuesupportedsupportedsupportedsupportedsupportedsupportedsupportedpartial (2/3)supportedsupportedpartial (2/3)
MUST convey change in valuepartial (1/2)partial (1/2)supportedsupportedsupportedsupportedsupportedsupportedsupportedpartial (1/2)partial (1/2)

Expectation: convey the "false" value

Strength of this expectation for different types of assistive technologies:

  • Screen Readers: MUST
  • Voice Control: NA

Examples:

  • Most screen readers will announce the state as "collapsed"

Expectation: convey the "true" value

Strength of this expectation for different types of assistive technologies:

  • Screen Readers: MUST
  • Voice Control: NA

Examples:

  • Most screen readers will announce the state as "expanded"

Expectation: convey change in value

Rationale:

The user needs to know that the value was successfully changed.

Strength of this expectation for different types of assistive technologies:

  • Screen Readers: MUST
  • Voice Control: NA

Examples:

  • If the element with aria-expanded has focus when its expanded state changes, the new state value will be announced (either "expanded" or "collapsed"). Some screen readers will re-announce the entire element, including name, role, and other properties and states.